Even if you don't want build list like in 40k, Pick the models you want to play and add the points cost to see if it's fair ;)
We updated (again) our army builds rules and it's working better this way
You need to talk with you adversary before playing, if you bring 10 wizards and he's playing without , it's not going to be fun and no amount house rules is going to change this !
Honestly, with just these few tweaks (and the points cost) the game is super fun and a lot more strategic than initially thought. We are having a blast playing Age of Sigmar
TRY it ! you got nothing to lose ;)